15657702242 has 32 divisors (see below), whose sum is σ = 28984150272. Its totient is φ = 6177622464.

The previous prime is 15657702233. The next prime is 15657702251. The reversal of 15657702242 is 24220775651.

It is an interprime number because it is at equal distance from previous prime (15657702233) and next prime (15657702251).

It is a self number, because there is not a number n which added to its sum of digits gives 15657702242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47438 + ... + 183209.

It is an arithmetic number, because the mean of its divisors is an integer number (905754696).

Almost surely, 2^15657702242 is an apocalyptic number.

15657702242 is a deficient number, since it is larger than the sum of its proper divisors (13326448030).

15657702242 is a wasteful number, since it uses less digits than its factorization.

15657702242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231042.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 15657702242 in words is "fifteen billion, six hundred fifty-seven million, seven hundred two thousand, two hundred forty-two".